Oooooooooops! (turbo) - Pirate4x4.Com : 4x4 and Off-Road Forum

DSI · 04-19-2002, 09:57 PM

well with all teh turbo stuff i've been reading this week i found several great articles on shimming hte waste gate actuator to gain boost, well i've also read how the CT20 is a lame turbo and not really capable of makign real boost... so why not remove teh actuator hose all together and plug it

i gotta say it sure sounded cool and accelerated faster than anything i've driven in a long time... but ummm, ya...

BOOM motor stalls and check eng light comes on! took my foot off the gas and she's back to life... dunno what it was but it scared the hell outta me!

5 8mm washer's is a gain over stock, but definatly not near as much ass as the removed actuator

according to the articles i'm pushing 10-11psi now

and i can bark 38's @ 8psi with a spool into second now

dangerber · 04-19-2002, 10:20 PM

You gonna team up with SuperRunner to race the ricers now?

NIC · 04-19-2002, 10:50 PM

your leaning it out to far.

NICK

Clifton · 04-19-2002, 10:54 PM

Quote:

Originally posted by DSI

according to the articles i'm pushing 10-11psi now

I hope you're not going by articles and you're using a boost gauge. If you remove the vac line from the wastegate you should easily be able to make 20+ psi. If that's the case one hard rattle will likely be it's last, knock sensor or not. Not to mention it would be lean as hell.

NIC · 04-19-2002, 11:36 PM

Quote:

Originally posted by Clifton

I If you remove the vac line from the wastegate you should easily be able to make 20+ psi. If that's the case one hard rattle will likely be it's last, knock sensor or not.

try that on a diesel engine and end up like me, a 4 month top to bottom rebuild.

NICK

CRO · 04-20-2002, 12:13 AM

To avoid a lean condition when the boost starts getting way up there you could install a pressure switch on your intake manifold set at around 10 psi that automatically switches on the cold start injector (basically bypassing the thermal switch in the front of the intake manifold) to add more fuel to keep it closer to stoich.

crash · 04-20-2002, 12:34 AM

Good idea cro..

CWToyota · 04-20-2002, 01:12 AM

You should think about a new garett t3/t4 hybrid turbo. they go for about $450 at www.turbochargers.com new! also go for larger injectors.

The toyota CT20 is not a bad turbo, it just isn't great.
they are prone to cracking in the exhaust housing and
have limited flow when the engine is at high RPMs 5000+ but at mid rpm they will boost like crazy you could probably get 20+ psi.

if you want to add more power, think about adding an air to air intercooler. you could find one at a junkyard... with the intercooler your boost will be lower at the manifold but you will gain power because the air is more dense.

By far the most simple way to get more fuel to the engine is to install an adjustable fuel pressure regulator and crank up the fuel pressure... this will force more fuel through the injectors and help compensate for the extra boost pressure.

Careful with that engine... your stock pistons wont like extra boost, hot timing, and lean conditions... they will melt!!!

r77toy · 04-20-2002, 10:01 AM

If you need an intercooler, I have one from an Audi, cheep, give me a shout

CRAZY MATT · 04-20-2002, 11:15 AM

might concider using a grainger valve to adjust ur boost settings

paddlenbike · 04-20-2002, 12:50 PM

Quote:

Originally posted by DSI
BOOM motor stalls and check eng light comes on! took my foot off the gas and she's back to life... dunno what it was but it scared the hell outta me!

The motor shut down because you hit the boost limit set by the stock ECU. There is a way to jumper the ECU so this doesn't happen, but you are gonna blow holes in the top of the pistons at the boost level you're running now (too lean).

DSI · 04-20-2002, 02:52 PM

Quote:

Originally posted by CWToyota
You should think about a new garett t3/t4 hybrid turbo. they go for about $450 at www.turbochargers.com new! also go for larger injectors.

450 for a turbo 400 for a header, plus new exhaust to match it... Hmm sounds like over 1k to me to do it right, NOPE not what i want to do, sorry...

T1H5_TA3 · 04-20-2002, 08:30 PM

how about a boost compesating fmu? they dont cost that much, and wouldnt be that hard to adapt..

DSI · 04-20-2002, 08:36 PM

Quote:

Originally posted by T1H5_TA3
how about a boost compesating fmu? they dont cost that much, and wouldnt be that hard to adapt..

hey Brian, care to elaborate some??

crash · 04-20-2002, 08:54 PM

I think that means Fuel Metering Unit?

DSI · 04-20-2002, 09:04 PM

Quote:

Originally posted by crash
I think that means Fuel Metering Unit?

well than you elaborate einstein

crash · 04-20-2002, 09:29 PM

well, the grass is green, the sky is blue, dirt is brown, and ashfault is black. Concreet is whiteish, your rig is, umm, blue, your %$$^&*& hole is large and black

DSI · 04-21-2002, 12:06 AM

Quote:

Originally posted by crash
well, the grass is green, the sky is blue, dirt is brown, and ashfault is black. Concreet is whiteish, your rig is, umm, blue, your %$$^&*& hole is large and black

you're so dead there widdleman!

04-19-2002, 09:57 PM	#1 (permalink)
DSI Pirate4x4 Addict! Join Date: May 2000 Member # 920 Location: The Land of Debauchery (NV) Posts: 15,130	Oooooooooops! (turbo) well with all teh turbo stuff i've been reading this week i found several great articles on shimming hte waste gate actuator to gain boost, well i've also read how the CT20 is a lame turbo and not really capable of makign real boost... so why not remove teh actuator hose all together and plug it i gotta say it sure sounded cool and accelerated faster than anything i've driven in a long time... but ummm, ya... BOOM motor stalls and check eng light comes on! took my foot off the gas and she's back to life... dunno what it was but it scared the hell outta me! 5 8mm washer's is a gain over stock, but definatly not near as much ass as the removed actuator according to the articles i'm pushing 10-11psi now and i can bark 38's @ 8psi with a spool into second now __________________ Thanks to the companies that make it happen: Bilstein Shock Absorbers, Trail-Gear, Trent Fab, PRP Seats, Raceline Wheels, PSC, MJ Motorsports

04-19-2002, 10:20 PM	#2 (permalink)
dangerber Registered User Join Date: Jun 2000 Member # 1070 Location: Stillwater, MN USA Posts: 1,773	You gonna team up with SuperRunner to race the ricers now? __________________ -Dan Where is pancakes house?

04-19-2002, 10:50 PM	#3 (permalink)
NIC Registered User Join Date: Nov 2000 Member # 2150 Location: australia Posts: 5,713	your leaning it out to far. NICK __________________ someone who has everything has everything to lose. BEN HARPER www.outerlimits4x4.com

04-20-2002, 12:13 AM	#6 (permalink)
CRO Registered User Join Date: Oct 2001 Member # 7588 Location: Beautiful B.C. Canada Posts: 857	To avoid a lean condition when the boost starts getting way up there you could install a pressure switch on your intake manifold set at around 10 psi that automatically switches on the cold start injector (basically bypassing the thermal switch in the front of the intake manifold) to add more fuel to keep it closer to stoich. __________________ 1948 Willys 1952 M37CDN Powag

04-20-2002, 12:34 AM	#7 (permalink)
crash Pirate4x4 Addict! Join Date: Aug 2000 Member # 1588 Location: GOLDBAR Posts: 12,654	Good idea cro.. __________________ Why is it we all are for doing the same thing--but yet we can not work together to achieve it Mike Crash Kash The new live streaming video crashfab Crashfab Shopcam

04-20-2002, 01:12 AM	#8 (permalink)
CWToyota Registered User Join Date: Mar 2002 Member # 10796 Location: Washington State Posts: 861	You should think about a new garett t3/t4 hybrid turbo. they go for about $450 at www.turbochargers.com new! also go for larger injectors. The toyota CT20 is not a bad turbo, it just isn't great. they are prone to cracking in the exhaust housing and have limited flow when the engine is at high RPMs 5000+ but at mid rpm they will boost like crazy you could probably get 20+ psi. if you want to add more power, think about adding an air to air intercooler. you could find one at a junkyard... with the intercooler your boost will be lower at the manifold but you will gain power because the air is more dense. By far the most simple way to get more fuel to the engine is to install an adjustable fuel pressure regulator and crank up the fuel pressure... this will force more fuel through the injectors and help compensate for the extra boost pressure. Careful with that engine... your stock pistons wont like extra boost, hot timing, and lean conditions... they will melt!!!

04-20-2002, 10:01 AM	#9 (permalink)
r77toy Registered User Join Date: Dec 2001 Member # 8933 Location: yellow house with toyotas in the yard, next door to the lesbians, down the street from the best Mexican food in Baja Torrance Posts: 304	If you need an intercooler, I have one from an Audi, cheep, give me a shout __________________ I kissed her on the left cheek, I kissed her on the right cheek, But I left her behind for you.

04-20-2002, 11:15 AM	#10 (permalink)
CRAZY MATT Registered User Join Date: May 2001 Member # 4733 Location: North Idaho Posts: 2,090	might concider using a grainger valve to adjust ur boost settings __________________ '80 Toyota '55 IH COE Truck '70 W100 4 Coots - '90 cummins 15 tractors and still collecting

04-20-2002, 08:30 PM	#13 (permalink)
T1H5_TA3 Registered User Join Date: Jan 2002 Member # 9324 Location: pacific north wet Posts: 1,085	how about a boost compesating fmu? they dont cost that much, and wouldnt be that hard to adapt.. __________________ 87 zuk 1.3, soa, 31's, spartan in rear

04-20-2002, 08:54 PM	#15 (permalink)
crash Pirate4x4 Addict! Join Date: Aug 2000 Member # 1588 Location: GOLDBAR Posts: 12,654	I think that means Fuel Metering Unit? __________________ Why is it we all are for doing the same thing--but yet we can not work together to achieve it Mike Crash Kash The new live streaming video crashfab Crashfab Shopcam

04-20-2002, 09:29 PM	#17 (permalink)
crash Pirate4x4 Addict! Join Date: Aug 2000 Member # 1588 Location: GOLDBAR Posts: 12,654	well, the grass is green, the sky is blue, dirt is brown, and ashfault is black. Concreet is whiteish, your rig is, umm, blue, your %$$^&& hole is large and black __________________ Why is it we all are for doing the same thing--but yet we can not work together to achieve it Mike Crash* Kash The new live streaming video crashfab Crashfab Shopcam

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